| 摘要 |
PROBLEM TO BE SOLVED: To provide a capless writing utensil which ensures the securely closed state of the tip part of a barrel interior of a simple structure. SOLUTION: This capless writing utensil is structured of a writing body 5 arranged in a barrel 2 and a pen-pint part 6 of the writing body 5 which is freely protruded from and retracted into an opening part 4 of the tip part 3 of the barrel 2. In addition, an inner cap 20 formed of a material with a modulus of compression permanent distortion stipulated by JIS K 6262-1997 being 20% or lower, is provided in the opening part 4 of the barrel 2. The inner cap 20 comprising a slit 25 for the pen-point part 6 to freely find its way in and out, formed on the pen-point part protruding side in the barrel axial center direction and a blocking part 21 for blocking the opening part 4, is mounted inside the barrel 2. |
